Feed-water heater for boilers



(No Model.)

J. D. MURPHY.

FEED WATER HEATER FOR BOILERS.

Elm-307,061

Patented Oct. 21, 1,884.

cgmpher. Washmgtnm D C.

UNITED STATES PATENT @FFICE.

, 7, 7w, We I JOHN D. MURPHY, OF CHICAGO, ILLINOIS.

FEED-WATER HEATER FOR BOILERS.

SPECIFICATION forming part of Letters Patent No. 307,061, dated October21, 1884.

Application filed May 7, 1884.

be afull, clear, and exact description of the.

same.

The object of my invention is to provide acombined heater and purifier,to the end that the heated water may reach the boiler in 'as clear acondition as possible.

The drawing represents a side elevation of my device,with port-ionsbroken away to show the internal construction.

A is a cylindrical shell, formed in sections, as shown. The drawingrepresents it as formed in three sections; but the number is not of theessence. It may comprise either a greater or smaller number, dependingupon the quantity of the water to be heated. In the top and bottom ofthe shell are chambers 2, formed by the uppermost and lowest diaphragms,s, and at the junctions of the several sections are intermediatechambers, t, formed by the intermediate diaphragms or heads 8, and thesechambers are connected by 11 ues 1*. Steam from the exhaust or livesteam enters the heater by one of the pipes q, passes through the fluesand the several chambers, and escapes through the other pipe (1. Theintermediate diaphragms, s, besides forming the chambers i, divide theinterior of the shell into compartments corresponding in number with thesections. The drawing shows three such compartments, p, p, and 19*. B B

are combined filters and mud-settlers, each,

comprising a metallic shell divided by a perforated diaphragm, 0, intotwo chambers, n and n. The upper chamber, a, is filled with a filteringn1ediu1n-such as charcoal, coke, or other suitable materialandcommunicates through a pipe, m, with the interior of one of thecompartments of the heater A, (the compartment p, for example) while thelower chamber, a, which operates as a mud-settler,

communicates through a pipe, in, with the next adjoining compartment ofthe heater, (the compartmentp, for example,) and is provided at itslower end with the discharge pipe and valve, Z, to carry off thesediment. Between [No model.)

constructed in every respect. but connects the intermediate compartment,1), wit-h the lowest compartment, 1). If there were but two sections tothe heater instead of three, only one filter B, with the necessaryconnections, would be employed, while, on the other hand, if the heatercomprises four sections, three filters would be required, and so on. Apipe, k, leads into the lowest compartment of the heater, and a pipe,Ir, leads out of the uppermost compartment.

The operation is as follows: ater under pressure is admitted into thecompartment p through the pipe is, and thence passes, by way of thefirst pipe on, filter B, and pipe on, into the adjoining compartment 1),thence, by way of the next pipe or, filter B, and pipe m, into theadjoining compartment 1), and finally out at the pipe 7.1 to the boiler,having been heated in its progress by exhaust or live steam from theboiler, passed in either direction through the fines r and chambers t,and purified by passing through the successive filtering and settlingdevices. From time to time the sediment which lodges in the mud-settlersn is drawn off by means of the dischargeyalves Z.

It is obvious that the arrangement might be such as to have the waterflow down through the heater instead of up; but the arrangement shown ispreferred, as it provides more effece nally and simply for the drawingoff the sediment from the filters. The reverse construc tion referred tois, however, within the spirit of my invention, as well as any otherconstruction that will serve to include the filter in the water-passageconnecting pairs of sec tions in a sectional heater.

.1 do not limit myself to any particular construction as to the filters,nor to any other matters of more detail. The construction abovedescribed is the one preferred, especially the feature of the sectionalshell, which presents great'advantages, it being thereby an easy matterto make heaters of any desired capacity by simply employing a greater orsmaller number of sections. It is not always necessary that all theconnecting-passages between the sections should contain filteringmaterial, though it is preferred that they should, in heaters ofordinary dimensions, such as that represented. Moreover, even withoutthe filtering medium, the mud-settler alone would perform a valuablefunction, and, on the other hand, the filter might be used without themud-settler. For many reasons it is preferred to have theconnecting-passages between the several compartments of a heaterexternal, as shown, though this is not absolutely necessary.

What I claim as new, and desire to secure by Letters Patent, is

1. In a feed-water heater for boilers, a shell formed in sections,provided with flanges for bolting them together, whereby heaters ofdifferent capacities may be made by employing agreater or smaller numberof such sect-ions, in combination with means, substan tially asdescribed, for passing steam and water through the heater.

2. A sectional feed-water heater for boilers, having a filtering mediumin the water-passage connecting pairs of sections, substantially asdescribed.

3. A feed-water heater comprising a metallic shell, steam-fines arrangedlongitudinally within the same, means for directing steam through thelines, and pipes for conveying water to and from the interior of theshell, in combination with transverse diaphragms dividing the interioraround the steam-fines into compartments, and one or more exteriorconduits connecting consecutive compartments, and containing amud-settling chamber, provided with means for drawing ofi the sedimentfrom the same, substantially as described.

-al-. A l'eedavater heater comprising a metallic shell, steam-finesarranged longitudinally within the same, means for directing steamthrough the fines, and pipes for conveying water to and from theinterior of the shell,in combination with transverse diaphragms dividing the interior around the steam-fines into compartments, and one ormore exterior conduits connecting consecutive compartments, andcontaining a filtering medium, all substantially as described.

5. A feed-water heater and purifier comprising, in combination, theshell A, formed in sections, and divided by diaphragms s and 8' intoseparate compartments, pipes k and k, leading into the end compartments,means for directing steam through the fines, and one or more exteriorfiltering devices with pipes m and m, connecting the compartments inseries, all substantially as described.

6. I11 combination with the shell A, formed in sections, diaphragms sand s, flues 0", means for directing steam through the flues, inlet andoutlet pipes 7a and 7a, and pipes at and m, the combined filters andmud-settlers B, connecting the pipes on and m, and each comprising ametal shell divided by a perforated diaphragm, 0, into two compartments,the upper compartment containing a filtering medium, and the lowercompartment being provided with a discharge-valve, substantially asdescribed.

JOHN D. MURPHY.

In presence of CHARLES C. LINTHIOUM, Honivrro ANDERSON.

